adding position and trade endpoints

internal/handlers/portfolio.go

@@ -42,3 +42,19 @@ func GetTradeListHandler(db *sql.DB) http.HandlerFunc {
 		}
 	}
 }
+
+func GetPositionListHandler(db *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		tradeList, err := database.GetPositions(db)
+		if err != nil {
+			http.Error(w, "failed to fetch trades", http.StatusInternalServerError)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		if err := json.NewEncoder(w).Encode(tradeList); err != nil {
+			http.Error(w, "failed to encode trades", http.StatusInternalServerError)
+			return
+		}
+	}
+}